Radiant|Natural|GIA

1.51ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 1357781607

Certificate GIA 1357781607

Diamond specifications and retailer prices

From £6,816 GBP
$9,133 USD
As of October 30, 2026
Save £2,110 GBP (24%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £8,926 GBP at Jared · As of October 30, 2026
View at Jared

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1357781607. Listed at 7 retailers as of October 30, 2026, with prices from £6,816 to £8,926, a £2,110 spread on the same certified stone. Jared lists it at £8,926. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1357781607
Dimensions7.03 × 5.71 × 4.08 mm
L/W Ratio1.23
Culet sizeNone
Top View
7.03 mm5.71 mm1.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1357781607
Side View
Table 68.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £8,561 GBP|Low: £6,447 GBP|High: £13,164 GBP|Avg: £9,359 GBP|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 2£7,092 GBP
Retailer 1£8,561 GBP
Retailer 4£8,758 GBP
Retailer 3£13,164 GBP

34 data points across 4 retailers

7 retailers£6,816 GBP to £8,926 GBP

B+
Cheapest Retailer
-
£6,816 GBP
$9,133 USD
B+
Retailer 2
-
£6,906 GBP
A$14,235 AUD
View
B
Retailer 3
-
£7,092 GBP
$9,502 USD
View
Final sale: no returns
B
Retailer 4
-
£8,561 GBP
View
B
Retailer 5
-
£8,635 GBP
$11,570 USD
View
B
Retailer 6
-
£8,635 GBP
$11,570 USD
View
Most Expensive
B
Jared
147088695 · Oct 30
£8,926 GBP
$11,960 USD
View
6 more retailers have this diamond
Prices start from £6,816 GBPSave up to £2,110 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.51ct Radiant
£6,816 GBP